As the group finished eating, Serenity was deep in thought about the Carcinus' Nest. The colossal crustaceans had received the blessing from Hera so they could travel to their version of heaven; the Cancer constellation. It was surprising to Serenity that a different world, in a different reality, would have the same stars.
When she voiced this thought, Levi chuckled as he said; "Realities are stacked and woven together, to create the fabric of space-time. Reality is the perception we have of the world around us. You perceive the stars here the same as in your world because they are one of the interconnecting threads that bind all."
"...The stars, or the heavens part?" Matt asked with confusion in his voice.
Levi's face turned contemplative for a moment; "I suppose both, in a way. I would be easier if you understood complex equations in mathematical physics."